Motion translating means



March 1, 1960 .E. J. MARKOSKI 2, 26,533 I MOTION TRANSLATING MEANS FiledJune 25. 1959 2 Sheets-Sheet 1 F: a; .E

INVENTOR Eda/1' JMarkasA i ATTORNEY March 1, 1960 E. J. MARKOSKI2,926,533

MOTION TRANSLATING MEANS Filed June 23, 1959 2 Sheets-Sheet 2 INVENTORZ4 Z0 fdwi/rJMdrx oskf ATTORNEY E nited States My invention relates tomotion translating means for converting rotary motion into reciprocatingmotion.

One of the objects of my invention is to provide motion translatingmeans which is so constructed and arranged that continuous andunidirectional rotating motion is converted into reciprocating motion.

Another object of my invention is to provide means of the foregoingdescribed character wherein gearing is employed for convertingcontinuous and unidirectional rotating motioninto reciprocating motion.

A further object of my invention is to provide means of the foregoingdescribed character wherein gear actuated racks or the like areemployedfor alternate operation in opposed directions to'eifectreciprocation of one component from a continuous. unidirectionalrotating component.

An important object of my'invention is to' provide means of theforegoing described. character which is simple in construction, durablein use, economical in manufacture,- and efficient in operation.

With the above and other objects in view, as will hereinafter appear,the invention consists in the combination and arrangement ofpartshereinafter set forth I and illustrated in the accompanyingdrawings from which the several features of the invention andtheadvantages attained thereby will be readily understood by those skilledin the art. 7

Referring to the drawings wherein like reference are t 7 and 18 andnormally maintained in engagement with-at least one of the confrontingends as' hereinafter made.

, shafts or the like, within the housing and which characters designatelike parts throughout the several views: I

Figure l is a side'elevation of myinvention and illustrating'the sameequipped with a saw and motor;

Fig. 2 is a sectional view taken'on the line 2-2 of Figure 1; v

Figures 3, 4 and 5 are sectional views taken on-the linej33 of Figure 2and illustrating various positions of the gearing and racks within thehousing;- and Figure 6 is a detail sectional view on an enlarged scaleand taken on the line 6-=6 'of Figure 5.

In practicing my invention, as; illustrated the drawings, 1 provide asectional housing. 5 including a pair of plate-like side and end walls 6and 7, respectively, the sections of the housing being secured togetherby screws 8 or the like. A drive shaft 9 extends transversely throughthe housingand-is rotatably ionrualed in the side walls 6 and has keyedthereto, between the walls 6, a segment gear 10 for meshing with a pairof gears 11 and 12 with the latter gear constituting an intermediategear meshing with a gear 13. The gears 11, 12, and 13 are fixed tosuitable'shafts 14, 15, and 16, respectively, rotatably journaledin thewalls 6. g p

The gears 11 and13 are inmesh with a pair of aligned relativelylengthwise movable, gear racks 17 and 18,

respectively, slidably mounted ona bar 19 disposed within the housing 5for reciprocation therein. The bar 19 is provided with a pair of spacedlugs or steps 20 disposed between the confronting ends ofIthe racks 1-7rollers 24 function to facilitate reciprocation of the bar 19zandmaintain the racks 17 and 18 in mesh with the gears 11 and 13 asheretofore described.

A coil spring 26 is sleeved about the rod 22 between the confrontingends of the racks 17 and18 and functions to urge the racks away fromeach other; The bar 19' has one end extending out of the housing throughone of the end walls 7 and which end is' equipped with a suitable tool,forinstanc'e, asaw 27. One of the side walls 6' of the housing hassecured thereto power means. for instance, an electric motor 28, whichis suitably connected to the drive shaft 9 for rotating the latter toimpart reciprocation to the saw 27. The casing of the motor may beprovided with a switch 29 for con trolling the motor and handles 30 forsupporting the device to facilitate operation of the saw 27 by the user.

In operation'-assuming' the gears 10, 11, 12, and 13, racks 17 and 18,and the bar 19 are in the positions disclosed in Figure 3 of thedrawings-"upon energization of the motor 28, the segment gear 10 rotatesclockwise, as indicated by the arrow, and effects rotation of the gear11 counterclockwise, as also indicated by the arrow,'with the resultthat the rack 17 will'be moved dextrally and in engaged relationwith'the lugs 20 and thus effect linear movement of the bar 19in unisonwith I the rack 17.

As the gear 10 rotates, the leading tooth L thereof will eifect meshingwith the gear 12, as illustratedin Figure 4, while its trailing tooth Tis still in mesh with the gear 11, with the result that the gear 12 willbe,

rotated counterclockwise and impart clockwise rotation to the gear 13which, in turn, will .move the rack '18 relative to the bar 19 andtowards the lugs 20 against the tension of the spring 26. As the rack 18is thus I moved it will ultimately engage the lugs 20 as depicted inFigure- 5;. Substantially simultaneously with the engagement of the rack18 with the lugs 20, demeshing of the gear 10 with the gear 11 willobtain whereby the of the rack 17. Y. a When the rack 18 thus engagesthe lugs 2li,-the bar 19 will thence be'moved sinistrally lengthwisewith the rack 18 until such time as the leading tooth T of the gearflll)meshes with the gear 11 whereupon the gear 11 will then move the rack 17towards the lugs 20 for engagement therewith upon demeshing of the gears10 and 12. As the gear 10 is rotated out of mesh with the gear12 boththe latter and the gear 13 will be rotated clockwise andcounterclockwise, respectively, by the action of the spring 26 movingthe rack 18 deittrally relative to the bar 19, it being noted that therod 22 advances in unison with thejrack actuated by the spring 26.

As herein disclosed, it will be apparent that upon rotation of the gear10 the bar 19 will be reciprocated through the instrumentality of thegearing and racks the housing and thus translate rotary motion intolinear or reciprocating motion for a multiplicity of uses. It will alsobe apparent that by adjusting the nuts 23 on the ends of the rod 22 thegears 11 and 12 may be moved through the racks to eifect proper meshingwith the gear 10. The racks may also be adjusted on the bar 19 rela--vtivev to the lugs 20 to effect proper timed engagement therewith.

While I have disclosed gears and racks having teeth of a customarydesign, other forms may be employed suitable for the translation of onetype of motion to another. In actual reduction to practice, the variouscomponents are adjusted in such a manner that engagement of the rackswith the lugs occurs substantially simultaneously with the meshing anddemeshing of the gear with the gears 11 and 12 whereby the pause .at theend of each stroke of the bar 19 is only momentary or almost negligi blethereby permitting high speed reciprocation of the bar.

Without further elaboration, the foregoing will so fully explain theinvention that othersrnay, by applying current knowledge, readily adaptthe same for use under various conditions of service. Moreover, it isnot indispensable that all the features of the invention be usedconjointly since they may be employed advantageously in variouscombinations and subcombinations.

-It is obvious that the invention is not confined solely to the useherein disclosed in connection therewith as it may be utilized for anypurpose to which it is adaptable. It is, therefore, to be understoodthat the invention is not limited to the specific construction asillustrated and de scribed, as the same is only illustrative of theprinciples involved which are capable of extended application in variousforms, and the invention comprehends all construction within the scopeof the appended claims.

What is claimed is:

-. 1. In motion translating means, a pair of spaced driven gears and athird gear disposed in meshed relation with one of said pair, a drivegear alternately disposed in meshed and demeshed relation with each gearof said pair, a reciprocating member, a pair of gear racks meshing withone of said pair and said third gear, respectively, for moving saidracks, said racks being slidably mounted on said member for movementrelative to each other and for moving said member in unison therewithalternately, compensating means for urging said racks from each otherupon demeshing of said drive gear with one of said pair and permittingmovement of said racks toward each other when said drive gear isdisposed in meshed relation with said pair, and motion limiting meansforengaging said racks for limiting the movement of the racks towards eachother and effecting unitary movement of said racks alternately with saidmember upon meshing and demeshing of said drive gear with said pair,respectively, whereby, reciprocating movement is imparted to said memberby rotation of said drive gear.

2. In motion translating means, a pair of spaced driven gears and athird gear disposed in meshed relation with one of said pair, a drivegear alternately disposed in meshed and demeshed relation with each gearof said pair, a reciprocating bar, a pair of gear racks meshing with oneof said pair and said third gear, respectively, for moving said rackstowards each other, said racks being slidably mounted on said bar formovement relative to each other and for moving said bar in unisontherewith alternately, resilient means disposed between said racks forurging the latter from each other upon demeshing of said drive gear withone of said pair and permitting movement of gears and a third geardisposed in meshed relation with one of said pair, a drive gearalternately disposed in meshed and demeshed relation with each gear ofsaid pair, a reciprocating bar, a pair of gear racks meshing with one ofsaid pair and said third gear, respectively, for moving said rackstowards each other, said racks being slidably mounted on said bar formovement relative to each other and for moving said bar in unisontherewith alternately, a spring disposed between said racks for urgingthe latter from each other upon demeshing of said drive gear with one ofsaid pair and permitting movement of said racks towards each other whensaid drive shaft is disposed in meshed relation with said pair, and lugscarried by said bar and interposed between said racks for engaging thelatter for limiting the movement of the racks towards each other andeffecting unitary movement of said racks alternately with said bar uponmeshing and demeshing of said drive gear with said pair, respectively,whereby, reciprocating movement is imparted to said bar by rotation ofsaid drive gear.

4. In motion translating means, a pair of spaced driven gears and athird gear disposed in meshed relation with one of said pair, a drivegear alternately disposed in meshed and demeshed relation with each gearof said pair, a reciprocating bar, a pair of gear racks meshing with oneof said pair and said third gear, respectively, for moving said rackstowards each other, said racks being slidably mounted on said bar formovement relative to each other and for moving said bar in unisontherewith alternately, retaining means for said racks for maintainingthe latter in preselected positions relative to said gears, resilientmeans disposed between said racks for urging the latter from each otherupon demeshing of said drive gear with one of said pair and permittingmovement of said racks towards each other when said drive gear isdisposed in meshed relation with said pair, and stop means interposedbetween said racks for engaging the latter for limiting the movement ofthe racks towards each all) , meshed relation with one of said pair, adrive gear alternately disposed in meshed and demeshed relation witheach gear of said pair and with all of said gears being encased withinsaid housing, a member reciprocally mounted in said housing and having asection extending out of said housing for mounting a tool, a pair ofgear racksvdisposed within said housing and meshing with once)? saidpair and said third gear, respectively, for moving said racks, saidracks being slidably mounted on said member Withinsaid housing formovement relative to each other and for moving said member in unisontherewith alternately, compensating means within said housing for urgingsaid racks from each other upon demeshing of said drive gear with one ofsaid pair and permitting movement of said racks towards each other whensaid drive gear is disposed in meshed relation with said pair, motionlimiting means for engaging said racks for limiting the movement of theracks towards each other and efiecting unitary movement of said racksalternately with said member upon meshing and demeshing of said drivegear with said pair, respectively, whereby, reciprocating movement isimparted to said member by rotation of said drive gear, and power meansdisposed outside of said housing and connected to said drive gear forrotating the latter.

6. A motion translating device comprising a housing, a plurality ofcomponents mounted within said housing and including a pair of spaceddriven gears and a third gear disposed in meshed relation with one ofsaid pair, a drive gear alternately disposed in meshed and demeshedrelation with each gear of said pair, a reciprocating bar having asection extending out of said housing for mounting a tool, a pair ofgear racks meshing with one of said pair and said third gear,respectively, for moving said racks towards each other, said racks beingslidably mounted on said bar for movement relative to each other and formoving said bar in unison therewith alternately, a spring disposedbetween said racks for urging the latter from each other upon demeshingof said drive gear with one of said pair and permitting movement of saidracks towards each other when said drive gear is disposed in meshedrelation with said pair, and lugs carried by said bar and interposedbetween said racks for engaging the latter for limiting themovement ofthe racks towards each other and effecting unitary movement of saidracks alternately with said bar upon meshing and demeshing of said drivegear with said pair, respectively, whereby, reciprocating movement isimparted to said bar by rotation of said drive gear, and power meansconnected to said drive gear for rotating the latter.

Cresswell Feb. 14, 1888 Nieman Mar. 25, 1930

